Improvement ln stop-cocks



E, H 0 XIE.

STOP-COCK.

No. 192,511. Patented June 26,1877.

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EDMUND HOXIE, OF NEWBUBYPORT, MASSACHUSETTS.

IMPROVEMENT l-N STOP-COCKS.

Specification forming part of Letters Patent N 0. 192,511, dated June26, 1877; application filed September 4, 1876. v

' To all whom it may concern:

Be it known that I, EDMUND Home, of Newburyport, in the county of Essexand State of Massachusetts, have invented a new and useful Improvementin Stop-(Jocks, which improvement is fully set forth in the followingspecificatiom'reterence being bad to the accompanying drawings.

My invention relates to that class of stopcocks in which the passage-wayis opened or closed by revolving the valwe and it has for its object,first, to raise the valve from or press the valve to its seat by anoperation and movement separate from, and independent of, that ofrevolving the valve to position for opening or closing; secondly, to soguide the valve in its direct movement from its seat,

and hold it in position while being revolved, as to prevent unnecessarywear; thirdly, to raise the valve from or press it to its seat by acombination of a right and-left threaded screw; fourthly, to so arrangethe yoke as to form stops for the hand-lever, and to indicate the properpositions of the valve.

In the drawings, Figure 1 represents a side view of a stop-cockembodying my inven tion, one-half being in section, and the valve shownset for a free passage-way. Fig. 2 is a horizontal section taken on line11 of Fig. l, and showing plan of parts below that line. Fig. 3 shows asection of the valve removed from the body of the stop-cock and turnedfrom the position shown in Fig. 1 to that when the passage-way isclosed.

A A are the induction and eduction nozzles or pipes. at is thevalve-seat. This valveseat may be made of soft metal, and formed solidwith the body of the stop-cock, as shown. B is the valve, formedtapering, as

shown, to fitthe seat a, and having the open" ings Z) on opposite sides,so located and formed that in the position shown in Fig. 1 there is anopen and free passage-way through the cook, but that a quarter-turn ofthe valve will close the passage-way. O is the valve-stem,

- which, joined firmly to the valve, extends through the cap D, packingat c, and stuffingbox d, and has at the upper end a thread, h, outthereon. 'The valve B is further guided and held in central position bythe guide-pin f, which, being held firmly, slides in the lower end ofthe valve.

To the cap D is joinedthe yoke, composed of the uprights E andcross-piece F. In the cross-piece F is a threaded opening, 9, into whichthe extended hub of the hand-wheel G screws.

The hub of hand-wheel G also screws onto the valve-stem G at it.

Either one of the screws 9 and it maybe right and the other leftthreaded; but I prefer-that the screw it of the valve-stem should beleft-threaded, and the screw g on the hub of hand-wheel right-threaded.

A hand-lever, H, is fastened firmly to the valve-stem by the pin 6, andis formed withflanges j on the sides. The uprights E are so located thatwhen the valve is set for opening or closing the lever H will bearagainst the When the valve is raised from its seat any side pressureagainst the same cannot causeit to bear against and wear one side of thevalve-seat, since it is so securely held by the guide-pin f.

Bythe screws g'and h the valve may be pressed most closely toits seatwhen closed.

Another advantage consists in havingthese screws outside of the body ofthe stop-cock.

I claim as my invention-- 1. The valve B, having the stem 0 and lever H,iuoombination with the yoke E F, thev screws g and h, and hand-wheel G,substantially as herein before specified.

2. The valve B, having the stem 0, in combination with the yoke E F,screws 9 and h, and hand-wheel G, all constructed, arranged,

. and operated substantially as hereinbefore set forth.

3. The valve B, having the stem 0, in combination with the yoke E F andlever H, having the flanges 9', substantially as and for the purposehereinbefore specified.

Witnesses EDW. Dummn, GLAUD PIERSON.

EDMUND 'HOXIE.

